check your local pbs listing for details. and online, you can listen to miles o'brien's full interview with andy williams, who explains what was going through his mind that fateful day when he carried out a mass shooting at his school. miles also spoke with liza long, author of the viral blog post "i am adam lanza's mother", about long's son's battle with mental illness and violent behavior. watch that interview on our homepage. >> ifill: more now on brain science and medical research, as the national institutes of health move to break new ground. ray suarez has that story. >> suarez: during his state of the union address, the president suggested for the first time that he will propose a decade- long effort to map the activity of the human brain. no dollar figures have been attached to the project, but scientists suggested it could result in hundreds of millions of dollars spent annually on new research in much the way the human genome project was funded in the nineties. the president connected those two projects as well, mak